试题与答案

关于x的方程|3x-1|=k,如果它只有一个解,那么实数k的取值范围是[ ] A

题型:选择题

题目:

关于x的方程|3x-1|=k,如果它只有一个解,那么实数k的取值范围是[ ]

A.k=0或k≥1

B.0<k<1

C.k=0或k=1

D.k<0

答案:

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